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with an average of
The wider the field of view and and the higher F number = the wider depth of field.
To simulate some numbers try some depth of field calculator, I'm using android so this one is only as an example: [link]
But there is a lot more, I believe iPhone app store also have some equivalency.
Get yourself a depth-of-field calculator app and spend some time fiddling with it. It's very educational.
I use one for Android called Hyperfocal Pro.
I use HyperFocalPro: [link]
it's a great app where you can select camera and lens.
However, I would really like a widget for the home screen. Alternatively, I should create tables for the most used focal lengths and apertures.
You should use this app;
Affirmative, it's from Hyperfocal Pro. There are no decent DOF calculators that I know of on the web.
not quite what you were hoping for but it is close! Has most models of cameras and you choose what length lens you have
As an Android user, I think photopills is one of the reasons I've considered switching back to iOS. The developers are apparently working on the Android version and I know I'll be one of the first to buy it.
A few of the most used functions are available with these apps:
The Photographer's Ephemeris for Plotting Sunset/Sunrise and Moonset/Moonrise location and times on a map.
Stellarium Mobile for figuring out the Milky Way position
Hyperfocal Pro for DOF calculation